We have 1 hardwired box connected to a TV. We have one TV in the same room as the WiFi/router box that is connected with an Xfinity wifi box. We have one TV in the next room to the WiFi/router box which is connected via an Xfinit wifi box.
The one TV in the room next to the wifi/router pixelates. Neither of the other two TVs experience this. All TVs are similar LG TVs.
What is causing the pixelation and how to fix?